高T_c超导4×4元面阵研制

选用高Ｔｃ超导薄膜ＹＢａ３Ｃｕ３Ｏ７－８，引用微加工技术，制出了４×４元面阵红外探测器，超导膜用湿法工艺光刻成折线结构，总线长约２０００μｍ，可提高敏感元工作电阻率。对于４×４元列阵，１６个敏感元公用电极的安排是关键。在设计中，１６个敏感元是同时读取信号，其探测率Ｄ在１．２×１０８～７．２×１０８ｃｍＨｚ１／２Ｗ－１之间，工作温度为８８Ｋ。     

2×8元列阵高温超导探测器研制

选用高Ｔｃ超导薄膜ＹＢａ２Ｃｕ３Ｏ７－８，引用半导体集成工艺，制出２×８元列阵红外探测器，其探测率Ｄ均达到１０＾８￣１０＾９ｃｍ·Ｈｚ＾１／２·Ｗ＾－１，工作温度为８９Ｋ。     

高Tc超导4＊4元面阵研制

选用高Ｔｃ超导薄膜ＹＢａ３Ｃｕ３ｏ７－８，引用微加工技术，制出了４＊４元面工外探测器，超导膜用湿法工艺光刻成折线结构，总线长约２０００μｍ，可提高敏感元工作电阻率。     

高T_c超导红外探测器热成像原理样机的研究

根据高Ｔｃ超导红外探测器成像原理，制成了８元线列超导红外探测热成像样机。文中给出样机对８～１４μｍ红外波长的测试结果，证明高Ｔｃ超导红外探测器在长波红外成像的可行性，获得了探索热成像系统的初步经验。     

高Tc超导红外探测器热成像原理机样的研究

根据高Ｔｃ超导红外探测器成像原理，制成了８元线列超导红外探测热成样机。文中给出了样机对８￣１４ｕｍ红外波和的测试结果，证明高Ｔｃ超导红外探测器在长波红外成像的可行性，获得了探索热成像系统的初步经验。     

（Pb,La）TiO3铁电薄膜的制备及热释电性能研究

讨论了ＰＬＴ１５铁电薄膜的溶胶－凝胶制备技术,及ＰＬＴ薄膜的结构和电性能研究。结果表明,在Ｓｉ基片上成功地生长出钙钛矿型结构多晶铁电薄膜,在（１１１）Ｐｔ／Ｔｉ／ＳｉＯ２／Ｓｉ上外延生长出（１１１）ＰＬＴ１５铁电薄膜。溶胶－凝胶制备的ＰＬＴ１５铁电薄膜具有优良的热释电性能,其热释电系数ｐ为５．２５×１０－８Ｃｃｍ－２Ｋ－１,电压响应率优值ＦＶ达到０．７８×１０－１０Ｃｃｍ／Ｊ,探测率优值Ｆｍ为１．１３×１０－８Ｃｃｍ／Ｊ,适于制备热释电红外探测器     

高性能高温超导红外探测器

选用高温超导体ＹＢＣＯ薄膜，利用集成微加工工艺，制成高温超导红外探测器。测得器件的等效噪声功率ＮＥＰ达到１０－１２Ｗ／Ｈｚ１／２，探测率Ｄ为１０９ｃｍＨｚ１／２／Ｗ，其中最好的器件性能为Ｄ＝１．８×１０１０ｃｍＨｚ１／２／Ｗ，表明这类探测器已进入实用阶段，成为红外探测技术发展的新方向之一。     

高温超导红外探测器对1—1000μm波段的光谱响应

采用ＹＢａＣｕＯ高温超导薄膜，制成芯片为蛇形的Ｔｃ超导Ｂｏｌｏｍｅｔｅｒ，对１￣１０００μｍ波段的光谱响应进行了测量，本文报道了实际测量结果，表明高温超导红外探测器在红外－毫米波段有应用前景。     

高温超导薄膜红外探测器研究

文章对高温超导薄膜红外探测器进行了基本理论分析，给出了器件设计思想，并报导了用高ＴｃＧｄＢａ２Ｃｕ３Ｏ７－ｘ薄膜制备的单元红外探测器，２×２阵列红外探测器的实验结果。在液氮温度下得到的最好结果是噪声等效功率ＮＥＰ（５００，１０，１）＝３．８×１０－１２ＷＨｚ－１／２，探测率Ｄ＊＝１．７×１０１０ｃｍＨｚ１／２Ｗ－１，响应度Ｒｖ＝３３１２ＶＷ－１。器件经过十多次的冷热循环，并在室温下保存一年以上。所得测量结果基本不变。     

微透镜和高Tc超导红外探测器组件

本文首次报道了利用微透镜阵列来提高ＹＢＣＯ高Ｔｃ超导薄膜红外探测器的光响应特性，介绍了利用光刻／离子束刻蚀的方法制作单片线列石英微透阵列的工艺以及制备线列ＹＢＣＯ高Ｔｃ超导薄膜红外探测器的方法，并将所制的石英微透镜阵列应用于ＹＢＣＯ超导器件。     

Resolution Enhancement Technology:Integrated Process Solutions using OPC

DUV lithography, using the 248 nm wavelength, is a viable manufacturing option for devices with features at 130 nm and less. Given the low kl value of the lithography, integrated process development is a necessary method for achieving acceptable process latitude. The application of assist features for rule based OPC requires the simultaneous optimization of the mask, illumination optics and the resist.Described in this paper are the details involved in optimizing each of these aspects for line and space imaging.A reference pitch is first chosen to determine how the optics will be set. The ideal sigma setting is determined by a simple geometrically derived expression. The inner and outer machine settings are determined, in turn,with the simulation of a figure of merit. The maximum value of the response surface of this FOM occurs at the optimal sigma settings. Experimental confirmation of this is shown in the paper.Assist features are used to modify the aerial image of the more isolated images on the mask. The effect that the diffraction of the scattering bars (SBs) has on the image intensity distribution is explained. Rules for determining the size and placement of SBs are also given.Resist is optimized for use with off-axis illumination and assist features. A general explanation of the material' s effect is discussed along with the affect on the through-pitch bias. The paper culminates with the showing of the lithographic results from the fully optimized system.     

Cost-effective test solutions for smart card and other integrated flash applications

From its emergence in the late 1980s as a lower cost alternative to early EEPROM technologies, flash memory has evolved to higher densities and speedsand rapidly growing acceptance in mobile applications.In the process, flash memory devices have placed increased test requirements on manufacturers. Today, as flash device test grows in importance in China, manufacturers face growing pressure for reduced cost-oftest, increased throughput and greater return on investment for test equipment. At the same time, the move to integrated flash packages for contactless smart card applications adds a significant further challenge to manufacturers seeking rapid, low-cost test.     

Theoretical analysis of the relationship between the Brillouin gain coefficient and the strain in the optical-fiber sensors

The relation between the power of the Brillouin signal and the strain is one of the bases of the distributed fiber sensors of temperature and strain. The coefficient of the Bfillouin gain can be changed by the temperature and the strain that will affect the power of the Brillouin scattering. The relation between the change of the Brillouin gain coefficient and the strain is thought to be linear by many researchers. However, it is not always linear based on the theoretical analysis and numerical simulation. Therefore, errors will be caused if the relation between the change of the Brillouin gain coefficient and the strain is regarded as to be linear approximately for measuring the temperature and the strain. For this reason, the influence of the parameters on the Brillouin gain coefficient is proposed through theoretical analysis and numerical simulation.     

An improved parallel thinning algorithm with two subiterations

The parallel thinning algorithm with two subiterations is improved in this paper. By analyzing the notions of connected components and passes, a conclusion is drawn that the number of passes and the number of eight-connected components are equal. Then the expression of the number of eight-connected components is obtained which replaces the old one in the algorithm. And a reserving condition is proposed by experiments, which alleviates the excess deletion where a diagonal line and a beeline intersect. The experimental results demonstrate that the thinned curve is almost located in the middle of the original curve connectivelv with single pixel width and the processing speed is high.     

Novel fiber-optical interferometer with miniaturized probe for in-hole measurements

Today, micro-system technology and the development of new MEMS （Micro-Electro-Mechanical Systems） are emerging rapidly. In order for this development to become a success in the long run, measurement systems have to ensure product quality. Most often, MEMS have to be tested by means of functionality or destructive tests. One reason for this is that there are no suitable systems or sensing probes available which can be used for the measurement of quasi inaccessible features like small holes or cavities. We present a measurement system that could be used for these kinds of measurements. The system combines a fiber optical, miniaturized sensing probe with low-coherence interferometry, so that absolute distance measurements with nanometer accuracy are possible.     

Study of waveguide coupling efficiency in hybrid silicon lasers

This paper presents a new method to increase the waveguide coupling efficiency in hybrid silicon lasers. We find that the propagation constant of the InGaAsP emitting layer can be equal to that of the Si resonant layer through improving the design size of the InP waveguide. The coupling power achieves 42% of the total power in the hybrid lasers when the thickness of the bonding layer is 100 nm. Our result is very close to 50% of the total power reported by Intel when the thickness of the thin bonding layer is less than 5 nm. Therefore, our invariable coupling power technique is simpler than Intel＇s.     

A rigorous proof of MIMO channel capacity’s increase with antenna number

It is well known that adding more antennas at the transmitter or at the receiver may offer larger channel capacity in the multiple-input multiple-output（MIMO） communication systems. In this letter, a simple proof is presented for the fact that the channel capacity increases with an increase in the number of receiving antennas. The proof is based on the famous capacity formula of Foschini and Gans with matrix theory.     

Teleportation of an arbitrary unknown N-qubit entangled state under the controlling of M controllers

A new quantum protocol to teleport an arbitrary unknown N-qubit entangled state from a sender to a fixed receiver under M controllers(M < N) is proposed. The quantum resources required are M non-maximally entangled Greenberger-Home-Zeilinger (GHZ) state and N-M non-maximally entangled Einstein-Podolsky-Rosen (EPR) pairs. The sender performs N generalized Bell-state measurements on the 2N particles. Controllers take M single-particle measurement along x-axis, and the receiver needs to introduce one auxiliary two-level particle to extract quantum information probabilistically with the fidelity unit if controllers cooperate with it.     

Diode-end-pumped Nd:YVO4/LBO lasers with 4.2W continuous-wave output at 457 nm

A continuous-wave (CW) 457 nm blue laser operating at the power of 4.2 W is demonstrated by using a fiber coupled laser diode module pumped Nd: YVO4 and using LBO as the intra-cavity SHG crystal With the optimization of laser cavity and crystal parameters, the laser operates at a very high efficiency. When the pumping power is about 31 W, the output at 457nm reaches 4.2 W, and the optical to optical conversion efficiency is about 13.5% accordingly. The stability of the out putpower is better than 1.2% for 8 h continuously working.     

Call for Papers

正Wireless Body-area Networks The last decade has witnessed the convergence of three giant worlds:electronics,computer science and telecommunications.The next decade should follow this convergence in most of our activities with the generalization of sensor networks.In particular with the progress in medicine,people live longer and the aging of population will push the development of wireless personal networks